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4-Oxo-1H-and-2H-[1]benzopyrano[4,3-c]pyrazoles. Preparation from 4-hydroxycoumarin or 3-chromonecarboxylic acid derivatives.

✍ Scribed by Bernard Chantegrel; Abdel-Ilah Nodi; Suzanne Gelin

Publisher: Elsevier Science
Year: 1983
Tongue: French
Weight: 234 KB
Volume: 24
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)81413-6

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✦ Synopsis

Summatry :

The convemion 06 3-a_cy~-4-hy~oxycoumanin~ Xo eLthe,t 4-oxo-l-phenyt-IH-[J]bwzo-

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